When a method returns an array reference, you include ____ with the return type in the method header.

a.
( )

b.
[ ]

c.
< >

d.
{ }

Answer:

  To make secure email compatible with other email system as, as we know that secured email is compatible in all ways and also it provides good flexibility. So, emails should prioritize the maximum security and a strong encryption and convenience to use like user friendly apps on all their device.

There are some factors which provides a secure email as:

Answer:

a) open addressing

Explanation:

Where there is a collision we try to find some other place in our array. This approach is called, open addressing.

Open addressing is where you talk about a problem or situation freely.

Where there is a collision we try to find some otherplace in our array. This approach is calld.

a) open addressing

b) closed hashing

c) open addressing and closed hasing

d) none of the aboe.

Answer: Central

Explanation: Dimensional model is the model that is created for the requirement of analysis of a particular business such as data warehouse. It is usually referred as the fact table as well.  Dimensional model has one major table known as central table and multi-part tables connected with it.The combination of the smaller tables are known as the dimension tables also.

Answer:

The number of nodes in a full binary tree of height 2 = 7

Explanation:

At each level k, of the full binary tree there are usually [tex]2^{k} \\[/tex] nodes.

So the full binary tree of height 2 has nodes= [tex]2^{0} \\[/tex] + [tex]2^{1} \\[/tex] + [tex]2^{2} \\[/tex].

which is 7.

A full binary tree of height 2 consists of 7 nodes, including the root and two additional levels of nodes, with each level doubling the number of nodes from the previous level.

A full binary tree of height 2 has a total of 7 nodes. The definition of a full binary tree means that every node has 0 or 2 children. Given that the height (the longest path from the root to a leaf) is 2, this means there are 2 levels below the root. On level 1 (just below the root), there would be 2 nodes (since a full tree must have either 2 or 0 children). On level 2, each of those two nodes from level 1 would themselves have two children, adding 4 more nodes for a total of 6 nodes beneath the root. Including the root itself, which is level 0, brings the total number of nodes to 7.A full binary tree of height 2 has a root node connected to two child nodes, and each child node is connected to two more child nodes. So, the tree has a total of 7 nodes.

Answer:

void printLarger (int num_1, int num_2){

   //if else statement for checking the condition

   if(num_1 > num_2){

       cout<<num_1<<endl;  //display the output

   }else if(num_1 < num_2){

       cout<<num_2<<endl;  //display the output

   }

}

Explanation:

Create the function with return type void, it means the function returns nothing.

The number will be large if it less than the second number.

The possible condition are:

1. number_1 > number_2: the number_1 will be large.

2. number_1 > number_2: the number_2 will be large.

In the programming, if-else is the conditional statement which is used for checking the condition and gives the output accordingly.

Syntax:

if(condition){

  statement;

} else if(condition){

   statement;

}

when the program executes the if statement checks if condition number_1 > number_2 is true or not if true then print the output.

if the condition false, then the program control move to the else if part and then checks the condition if the condition true then print the output.

Answer:

A bool can hold only true or false values.

A char can hold maximum 65535 characters.

An int can hold maximum positive value of 2,147,483,647.

A float can hold maximum positive value of 3.4 x 10^{38}.

Explanation:

Primitive data types in Java language can be categorized into boolean and numeric data types.

Numeric can be divided further into floating point and integral type. Floating data type includes float and double values while and integral data type which consists of char, int, short, long and byte data types.

Every data type has a range of values it can hold, i.e., every data type has a minimum and maximum predefined value which it is allowed to hold. The intermediate values fall in the range of that particular data type.

Any value outside the range of that particular data type will not compile and an error message will be displayed.

The data types commonly used in programming are boolean, char, int and float.

A boolean variable can have only two values, true or false.

A char variable can hold from 0 to 65535 characters. Maximum, 65535 characters are allowed in a character variable. At the minimum, a char variable will have no characters or it will be a null char variable, having no value.

An int variable has the range from minimum -2^{31} to maximum 2^{31} – 1. Hence, the maximum positive value an int variable can hold is (2^{31}) – 1.

A float variable can hold minimum value of 1.4 x 10^{-45} and maximum positive value of 3.4 x 10^{38}.

The above description relates to the data types and their respective range of values in Java language.

The values for boolean variable remain the same across all programming languages.

The range of values for char, int and float data types are different in other languages.

Answer:

The answer is action eventlistener

Explanation:

It is an event handler and it is easy to implement.In java we call them even listeners it is function or a sub routine or a procedure that waits for an event to occur and respond to an event from a GUI component.

Answer:Following is the c++ code for the problem:

#include <iostream>

using namespace std;

int main() {

   int number;

   cout<<"Enter the number"<<endl;

   cin>>number;

   int i=0,c=0,odd[500];

   while(i<=number)//loop for printing the numbers form 0 to number.

   {

       cout<<i<<" ";

       if(i%2!=0)// storing in the odd array if the number is odd.

       {

           odd[c++]=i;//storing odd numbers..

       }

       i++;

   }

   cout<<endl;

   i=0;

   cout<<"The odd numbers are "<<endl;

   while(i<c)//loop to print the odd numbers.

   {

       cout<<odd[i]<<" ";

       i++;

   }

   cout<<endl<<"The prime numbers are "<<endl;

   i=0;

   int sum=0;

   while(i<c)//loop to print the prime numbers..

   {

       int div=2;

       while(div<odd[i])

       {

           if(odd[i]%div==0)

           break;

           div++;

       }

       if(div==odd[i])

      {

           cout<<odd[i]<<" ";

           sum+=odd[i];//updating the sum..

      }

       i++;

   }

   cout<<endl<<"The sum of odd prime numbers is "<<sum<<endl;//printing the sum..

return 0;

}

Output :

Enter the number

49

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49  

The odd numbers are  

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49  

The prime numbers are  

3 5 7 11 13 17 19 23 29 31 37 41 43 47  

The sum of odd prime numbers is 326 .

Explanation:

First I have printed the values from 0 to n and i have taken an array to store odd numbers.After that i have printed the odd values.And after that i have printed prime numbers among the odd numbers and their sum. These all operations are done using while loop.

Answer: The major responsibility of a programmer is the development of the computer programs for an organization.

Explanation: Programmers tends to have good programming language knowledge for developing programs according to the need. They are supposed to create coding pieces as per the requirement in a software programming language. They are also have a duty of testing the program code. They should persist the skill of problem solving as well as critical thinking to be a good programmer in a particular organization.

Answer:

==

Explanation:

Operator precedence, it tells about the flow of operator execution o which operator execute first and which execute last.

'==' > '&&' > '||' > '='

According to precedence table,

the equal equal operator '==' comes first. so, it execute first and then NOT operator, then OR operator and finally equal operator.

Answer: a) Least

Explanation: Pipelining is the process where multiple instruction are to be processed in a parallel way . The most important steps in this process include step like fetching the instruction, decoding it, executing ,reading the instruction and writing it to the memory. So,instruction set is not a very important in the structure of the pipeline.

Answer:

Key technological trends that heighten ethical concerns are as following :-

1. Declining Storage Costs.

2. Data Analysis Techniques.

3. Doubling of computer power.

4. Networking advances and the internet.

Explanation:

Declining Storage costs-It means that data storage capacity has increased over the years and costs is reduced accordingly.Massive data storage systems are cheap and easily available so local retailers also can have the customers details stored in their systems.

Data Analysis Techniques:-Due to advances in data analysis the companies are able to find much detailed personal information of a person.

Doubling of computer power:-Computer power is doubled every 18 months.We are much more dependent upon the systems and are vulnerable to system errors.

Networking advances and the internet:-People are addicted to internet now a days and there are that they can provide their personal information to any phishing website or mails.

Answer:

ampersands

Explanation:

In the programming the AND operator is denoted as '&&' , two ampersands.

it is used to between two conditions and give Boolean result.

It has four possible result:

first condition TRUE  second TRUE, result TRUE

first condition TRUE  second FALSE, result FALSE

first condition FALSE second TRUE, result FALSE

first condition FALSE second FALSE , result FALSE

For example:

(5 > 0 && 7 > 4):   it gives the result TRUE because both are true.

5 > 8 && 7 > 4):   it gives the result FALSE because one is false.

Answer:

Transmission Control Protocol

Explanation:

Transmission Control Protocol is using connectionless services if network layer is providing connection oriented services.

Answer:

a- Reasoning from specific evidence to a general conclusion

Explanation:

Induction is reasoning from specific evidence to a general conclusion.

Answer:

srand(time(NULL));

int namesrand = rand() % 100 +1;

Explanation:

srand() is the function which is used for seeding the rand() function.

it defines the starting point different in whenever rand() function executes. Therefore, rand() generate the output different in every execution.

rand() is the function that generates the random number within the range.

for example;

rand() % 20

it generates the random number within the range [0,20).

NOTE: 20 not included in the range and zero is included.

similarly, generate the number between 0 to 99.

rand() % 100.

so, if we add the generated number by one then it ranges become 1 to 100 both included.

Answer:

Procedure are used to create and modifying the programs. Basically, it is grouping of instruction that can be used give direction of the flow of program. Control are given to the next term once the execution of the instruction get over. The steps of procedure are:

procedure are first executed the declaration instruction and then coding the procedure, then it will return to the directories and the last executable instruction is the termination of procedure.

Answer:

Extreme programming is a software development technique which is used to enhance software quality and it's response to ever changing customer requirements.

Testing

Testing is main focus in extreme programming.Extreme programming addresses testing in a way that if a minute testing can eliminate a bit of flaws, extensive testing can terminate a lot of flaws.

Evolution in Extreme programming is like this:-

Coding:-First programmers will code the problem.

Testing :- Testing is done to remove flaws.

Listening:- Programmers must listen to the customers to what they need.

Designing:-Then design according to the customer needs.

Answer:

An assignment statement's overall syntax is-

                   variable = expression ;

Where the variable must be declared; the variable may be a simple name, or an indexed location in an array, or an object's field (instance variable) or a class static field; and the expression must result in a value that is compatible with the variable type. In other words, it must be feasible to cast the expression to the variable type.

Examples: int i =4;

a) b=(a+2);

(a+2) is the expression for adding 2 to a, whereas b equal to the result of (a+2).

b) a=b*4;

(b*4) is the expression for multiples b times 4,whereas a equal to the result of (b*4)

c) b=(a/3.14)

(a/3.14) is the expression for divides a by 3.14,whereas b equal to the result of (a/3.14)

d )a=(b-8)

(b-8) is the expression for Subtracts 8 from b,whereas a equal to the result of (b-8)

Answer:

some of the IT roles are network maintenance, network administration, researchers, scientist, technical supports, application development.

Their roles are maintaining IT infrastructure, develop applications recruit staffs, management.

Explanation:

They should be proficient in establishing IT services and security policies, should be able to recruit staff members, know the project management rules and budget management and customer relationships and establishing establishing.

Answer:

 #include <iostream>

using namespace std;

int main()

{

  float radius = 5.4;

  float circumference = 2 * 3.14 * radius;

  float area = 3.14 * radius * radius;

  cout<<"the circumference of the circle is "<<circumference<<endl;

  cout<<"the area of the circle is "<<area<<endl;

  return 0;

}

Explanation:

Include the library iostream for using the input/output instructions.

create the main function and define the variable with value. Then,

use the formula to calculate the circumference and are of circle.

[tex]circumference = 2*\pi *radius[/tex]

[tex]area = \pi * radius^{2}[/tex]

here, choose [tex]\pi = 3.14[/tex]

after that, display the result.

Note: All variable define in float type.

Answer:

This file contains encrypted password and other information also such as password expiration values,account and other confidential stuff etc.

Explanation:

In linux this file contains passwords and confidential stuff.

This file is only readable that to by the root account and hence it is secured.

Answer:

The measurement value is the value given by a measuring instrument and the true value is the actual value of the property being measured.

Explanation:

Answer:

#include<stdio.h>

//main function

int main(){

   //initialization of variable

   char arr1[12][12] = {"January","February","March","April","May","June","July","August","September","October","November","December"};

   int arr2[12]={31,28,31,30,31,30,31,31,30,31,30,31};

   int i,j;

   //for loop for print the arrays

   for(i=0;i<12;i++){

     for(j=0;arr1[i][j]!='\0';j++){

       printf("%c",arr1[i][j]);    //for print the months

     }

     printf(" %d",arr2[i]);   //print the days

     printf("\n");  //for newline

   }

   return 0;

}

Explanation:

Create the main function and then define the two array with hard-code the month names and number of days in each month.

For defining the string array, you have to take the 2-D array of type 'char'.

then, take nested for loop for print the element in the array.

nested for loop means, loop inside a loop. It is used for the 2-D array. The outer loop is for row and the inner loop is for the column.

For every row, the inside loop print the string character by character with the help of printf() function which is used to display the value on the screen.

after the inner loop terminates, then another prinf() function is used for print the days after the name of the month. Then. the outer loop runs again.

This is process continues until the outer loop not terminate and finally, we get the desired output.

Answer:

1, 2 and 4

Explanation:

the Math.max() is the function in java which is used to compare the two values and it gives the maximum of two values.

it take only two argument and the data type can be int, float etc.

Math.max(1,4): it takes two int values and give the output 4. it is valid call.

Math.max(2.3, 5): it takes two values and give the output 5.0. it is valid call.

Math.max(1, 3, 5, 7): it takes 4 values which is wrong because function takes only two variables. it is not valid call.

Math.max(-1.5, -2.8f): it takes two values and give the output -1.5. it is valid call.

Final answer:

All provided calls to the Math.max function in Java are valid. The function can handle two or more numbers of various types by implicitly converting them to the appropriate type for comparison.

Explanation:

The Math.max function in Java is used to find the highest value among its arguments. The method accepts either two int, long, float, or double arguments or a variable number of arguments of one of those types. Therefore, all the calls to Math.max provided in the question are valid:

Based on this information, the correct answer is C. 1, 2, and 3 are valid calls to Math.max.

Answer:

Option A is the right answer. When designing a database the first step is to clearly define the purpose of database. What are the primary goals you want to achieve by building a database for a specific purpose. There are various methods of defining core purpose of database design.

Explanation:

Answer details  

Grade: College

Subject: Computers and Technology

Chapter: Database Design

Keywords: designing database, relations in database, primary key etc

Final answer:

The correct answer is "clearly define the purpose of the database". The first step in designing a database is to clearly define its purpose, which guides all other design decisions such as table organization, relationships, and primary keys.

Explanation:

When designing a database, the first step should always be to clearly define the purpose of the database. This involves understanding its main functions, the kind of data it will contain, and how that data will be used. It's essential to document the purpose of the database, its anticipated users, and the ways in which it is expected to be utilized. This foundational step is critical for guiding subsequent design decisions, such as data modeling, establishing table relationships, and choosing primary keys.

After the purpose is defined, the next steps involve organizing the data efficiently. This includes dividing data into tables to minimize redundancy and establishing table relationships to link related data effectively. Defining primary keys for each table is another crucial step to ensure that each record can be uniquely identified, thus maintaining data integrity and facilitating data retrieval.

Answer:

The answer is true.

Explanation:

An array is a collection of data of the same type. It is used to handle a number ''n'' of elements in common, either of types defined by the language ( int, float, string, etc) as well as those defined by the programmer.

A one dimensional array is a structured data type that is made up of a finite, ordered collection of data of the same type.

A vector, also called a one dimensional array, is a data structure that allows you to group elements of the same type and store them in a single block of memory together, one after the other. This group of elements is identified by the same name and the position in which they are found. Ther first position of the array is position zero.

We could group in an array a series of elements of integer type, floating, etc. For example:

int a [5]; (vector of 5 integers)

float b[5]; (vector of 5 floating)

int a [] = {5,6,7,8,9};

float b [] = {5.1,5.2,5.3,5.4,5.5};

Since there are 5 elements in each array, automatically 5 memory spaces will be assigned to each vector, but if I try to create the vector of the form int a [], the compiler will show an error, because I did not indicate the size of the vector and I did not initialize its elements.

Answer:

#include<iostream>

using namespace std;

//create the function

int minElement(int arr[],int n){

   int minimum = arr[0];  //store the first value of array

   //for loop for iterate the each element

   for(int i=0;i<n;i++){

       if(arr[i]<minimum){   //compare

           minimum=arr[i];

       }

   }

   return minimum;

}

int main(){

   int arr[]={4,1,7,9,2,6};

   int array_size = 6;

   int result = minElement(arr,array_size);   //calling

   cout<<"The min value is: "<<result<<endl;

}

Explanation:

First include the library iostream in the c++ programming for input/output.

then, create the function minElement() for find the minimum value in the array.

it required the one loop for iterate the each element in the array and then compare with first element in the array which is store in the variable minimum.

if array element is less than the minimum then, update the value in the minimum variable.

after complete the loop, return the result.

for capture the result create the main function and call the function with parameter array.

and finally display the result.